纵向涡强度衰减及其干涉的数值分析  

NUMERICAL ANALYSIS OF INTENSITY DECAY AND INTERACTION OF LONGITUDINAL VORTICES

作　　者：阳祥[1] 王良璧[1] 

机构地区：[1]兰州交通大学机电工程学院,甘肃兰州730070

出　　处：《工程热物理学报》2006年第5期844-846,共3页Journal of Engineering Thermophysics

摘　　要：本文以空气为介质,在Re=600-2100的范围内对布置有三角翅片的平行通道内的初始段层流状态下涡干涉的流动及换热进行了数值模拟。展示了旋向相反的涡在流道中的产生及发展情况,说明了涡产生器在横向位置变化时对横截面上平均Nu数和涡旋强度(?)的影响,并对单个涡产生器的有效换热区域长度进行了探讨。For fluid of air, flow field and heat transfer in the laminar inflow channel mounted with triangular winglet pairs have been investigated in the Reynolds number range of 600～2100. A set of laminar flow predictions in a two-plane-formed channel are presented to demonstrate how counterrotating streamwise vortices were produced, developed and interacted. The results implied that variation of transverse distance between a pair of vortex generators will impact the magnitude of average Nusselt number and vortices intensity. We also investigated the range of effective-distance for single vortex generator （VG）, which is helpful for heat transfer enhancement in application.

关 键 词：数值模拟 涡 涡产生器 涡干涉 流动与换热 

分 类 号：TK124[动力工程及工程热物理—工程热物理]